magnetosphere

noun
mag·​ne·​to·​sphere | \ mag-ˈnē-tə-ˌsfir, -ˈne-\

Definition of magnetosphere

: a region of space surrounding a celestial object (such as a planet or star) that is dominated by the object's magnetic field so that charged particles are trapped in it

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Other Words from magnetosphere

magnetospheric \ -​ˌnē-​tə-​ˈsfir-​ik , -​ˈsfer-​ \ adjective

Examples of magnetosphere in a Sentence

Recent Examples on the Web

Above the ionosphere is the Earth’s magnetosphere, an area that marks the border of Earth’s magnetic field. Avery Thompson, Popular Mechanics, "A Group of Scientists Want to Launch a Satellite to Make an Artificial Aurora," 29 Oct. 2018 In related research, Juno has also been studying Jupiter's magnetosphere, which is the region where the magnetic field is strong enough to dominate particles from solar winds and shield the planet. Jay Bennett, Popular Mechanics, "The Juno Spacecraft Reveals New Mysteries at Jupiter," 25 May 2017 The magnetosphere plays a crucial role in protecting Earth from solar radiation. Meghan Bartels, Space.com, "Long-Lost Spacecraft That NASA Rediscovered This Year Is Incommunicado," 30 Aug. 2018 But scientists recently learned that collisions between particles of the solar wind and stray particles of Earth's atmosphere produce low energy x-rays that light up the magnetosphere. Dennis Normile, Science | AAAS, "New China space missions will watch for colliding black holes, solar blasts," 11 July 2018 Saturn has a magnetosphere that cocoons Enceladus, unlike our own moon. Joe Pappalardo, Popular Mechanics, "Saturn and Its Moon Enceladus Talk To Each Other. The Sound Is Perfectly Cosmic and Eerie.," 10 July 2018 By mapping plasma around Saturn, researchers can determine the planet’s magnetosphere, or the magnetic bubble that surrounds some planets. Joe Pappalardo, Popular Mechanics, "Saturn and Its Moon Enceladus Talk To Each Other. The Sound Is Perfectly Cosmic and Eerie.," 10 July 2018 Mapping changes in Saturn’s magnetosphere can tell us a lot about the solar wind, a critical component of space weather that effects probes, satellites and astronauts alike. Joe Pappalardo, Popular Mechanics, "Saturn and Its Moon Enceladus Talk To Each Other. The Sound Is Perfectly Cosmic and Eerie.," 10 July 2018 In 2009, the Naval Research Lab suggested that astronomers couldlisten in to find habitable exoplanets by listening for the pulsations of their magnetospheres. John Wenz, Popular Mechanics, "Meet the Astronomer Who Listens to the Music of the Cosmos," 12 May 2015

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'magnetosphere.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of magnetosphere

1959, in the meaning defined above

History and Etymology for magnetosphere

magneto- + -sphere

Note: Term introduced by the Austrian-born physicist Thomas Gold (1920-2004) in "Motions in the Magnetosphere of the Earth," Journal of Geophysical Research, vol. 64, no. 9 (September, 1959), pp. 1219-24.

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2 Jan 2019

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The first known use of magnetosphere was in 1959

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More from Merriam-Webster on magnetosphere

Britannica English: Translation of magnetosphere for Arabic Speakers

Britannica.com: Encyclopedia article about magnetosphere

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